JPH04223036A - Mount and tube bulb using it - Google Patents

Abstract

PURPOSE:To facilitate a manufacturing process while making the process effective for a lamp having a small bulb diameter by mounting a pair of lead wires on the side of an exhaust pipe consisting of a glass tube while sealing the halfway part and connecting a filament to its tip part. CONSTITUTION:A pair of lead wires 3, 3 are sealed in the mutually opposing positions on the external face of an exhaust pipe consisting of glass tube, and the respective lead wires 3, 3 are fixed while the sealing wires 3b consisting of Dumet wires are buried in the outside of the tube 2. Then, at the tips of these wires 3, 3, that is, at the tips of the inner wells 3a, 3a, a filament 4 consisting of tungsten is bridged and by welding the end parts of the bulb 20 into the outside of the tube 2 so that the outsides of the wires 3, 3 may be wrapped in so as to allow wires 3, 3 to airtightly penetrate the end part of the bulb 20. Thereby, since no flare part is used in the mount 1, the material can be saved, the structure and becomes simple manufacture is facilitated. In addition this process is also effective to a lamp having a small diameter so that a small-sized lamp can easily be manufactured.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mount used for a tube and a tube such as a fluorescent lamp or an incandescent lamp using the same.

0002

2. Description of the Related Art Fluorescent lamps and incandescent lamps generally have an electrode mount attached to the end of a bulb made of a glass tube. Traditional mounts used flared stems.

That is, the conventional structure will be explained based on FIG. 3. In the figure, numeral 10 is a mount. This mount 1
0 uses a flared stem 11 made of glass, and this stem 11 has a flared part 12 at the end. A pair of lead wires 13, 13 are passed through the stem 11 in a confidential manner. The lead wire 13 includes an inner well 13a made of nickel or its alloy or nickel-plated metal, a sealed wire 13b made of Dumet wire or the like and sealed to the stem 11, and an outer well 13 made of nickel, copper, or an alloy thereof.
It has a three-part structure with c connected into one. The tips of these lead wires 13, 13, that is, the inner well 13
A filament 14 made of tungsten is spanned over the tips of the filaments a and 13a. An exhaust pipe 15 is integrally connected to the center of the flare stem 11, and this exhaust pipe 15 is connected to an exhaust hole 16 opened on the side surface of the flare stem 11.
is familiar with

[0004] The mount 10 having such a structure is hermetically joined to the end of the valve 20. In the case of a straight tube type fluorescent lamp, the edge of the straight tube type bulb 20 and the peripheral edge of the flare portion 12 are heated and melted and welded to each other. As a result, the filament 14 is exposed to the discharge space.

The inner surface of the bulb 20 is coated with a phosphor (not shown), and the bulb 20 is filled with mercury and a starting rare gas.

[0006]

[Problems to be Solved by the Invention] In the mount 10 having the above-described structure, the diameter of the flare portion 12 is set to be equal to that of the valve 20.
It is necessary to manufacture it with high precision in accordance with the diameter of
It takes time to manufacture. Further, although the flare stem 11 is effective when the diameter of the valve 20 is relatively large, there is a limit to its application when the diameter of the valve is small.

[0007] Furthermore, in a lamp using such a mount 10, the flare portion 12 of the stem 11 is connected to the bulb 20.
Since it is bonded to the end of the electrode, the height h2 of the electrode increases,
There is a drawback that the effective light emitting length is short relative to the entire length of the bulb.

The present invention has been made based on the above circumstances, and aims to provide a mount that has a simple structure, is easy to manufacture, and can reduce the height of the electrode, and a tube using the same. It is something.

[0009]

[Means for Solving the Problems] The mount of the present invention is provided by attaching a pair of lead wires to the side surface of an exhaust pipe made of a glass tube by sealing the middle portions of each, and the tips of these lead wires. It is characterized by having a filament connected to it.

Further, in the bulb of the present invention, a pair of lead wires are attached to the side surface of an exhaust pipe made of a glass tube by sealing the intermediate portions of each, and a filament is attached to the tips of these lead wires. The present invention is characterized in that a mount is constructed by connecting the wires, and the end of the bulb valve is joined to the side surface of the exhaust pipe.

[0011]

[Operation] The mount of the present invention does not have a flared portion unlike the conventional mount, so it is easy to manufacture and is effective for lamps with small bulb diameters.

Further, according to the bulb of the present invention, since the end of the bulb is welded to the side surface of the exhaust pipe, the height of the electrode can be lowered, making it possible to easily manufacture a small lamp, and to reduce the size of the lamp. When applied to a light lamp, the effective light emitting length relative to the total length of the bulb becomes long.

[0013]

Embodiment The present invention will be explained below based on an embodiment shown in FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a mount, and the mount 1 of this embodiment has the structure shown in FIG. That is, 2 is an exhaust pipe made of a glass tube, and a pair of lead wires 3 are provided on the outer surface of the exhaust pipe 2 at positions facing each other.
3 is sealed.

The lead wire 3 includes an inner well 3a made of nickel or its alloy or nickel-plated metal, a sealed wire 3b made of Dumet wire or the like and sealed to the exhaust pipe 2, and nickel or copper or these. It has a three-part structure in which outer wells 3c made of an alloy are connected into one. These lead wires 3
, 3 is a sealed wire 3 made of Dumet wire in the middle of the wire.
b is embedded and fixed in the outer surface of the exhaust pipe 2.

A filament 4 made of tungsten is spanned over the tips of these lead wires 3, 3, that is, the tips of the inner wells 3a, 3a.

The mount 1 having such a structure is hermetically joined to the end of the valve 20, as shown in FIG. In the case of a straight tube type fluorescent lamp, the edge of the straight tube type bulb 20 is connected to the exhaust pipe 2.
is welded to. That is, when the end edge of the valve 20 is heated and melted, the diameter of this melted portion is reduced, and due to this reduction, the end of the valve 20 is welded to the outer surface of the exhaust pipe 2. In addition,
It is also possible to weld the end edge of the valve 20 to the outer surface of the exhaust pipe 2 by heating and melting the end edge of the valve 20 and forcibly reducing the diameter of this melted portion using a mold or the like.

By welding the end of the valve 20 to the outer surface of the exhaust pipe 2, it also wraps around the outer surfaces of the lead wires 3, 3, and the lead wires 3, 3 pass through the end of the valve 20 in a confidential manner. will be done.

[0019] Due to the sealing by such a mount 1,
The filament 4 faces the discharge space within the bulb 20.

The inner surface of the bulb 20 is coated with a phosphor (not shown), and the bulb 20 is filled with mercury and a starting rare gas.

[0021] In such a configuration, the mount 1 does not use a flared portion unlike the conventional one, so that material can be saved, the structure can be simplified, and manufacturing can be facilitated. In addition, since there is no flare part, the diameter of the mount itself can be reduced, which is effective for application to thin valves.

Furthermore, according to the above-mentioned fluorescent lamp, since the end of the bulb 20 is directly welded to the exhaust pipe 2, the height h1 of the electrode can be reduced, and this is combined with the fact that the mount itself has a small diameter. Therefore, small-sized lamps can be easily manufactured.

Furthermore, since the electrode height h1 can be reduced, the effective light emission length can be increased relative to the entire length of the bulb, and if the effective light emission length is made equal to the conventional one, the bulb length can be shortened.

Note that the present invention is not limited to the above embodiments.

That is, in the above embodiment, the case of a straight tube type fluorescent lamp has been described, but the present invention may be implemented with a ring type fluorescent lamp or an incandescent light bulb.

[0026]

[Effects of the Invention] As explained above, according to the mount of the present invention, a pair of lead wires are attached to the side surface of an exhaust pipe made of a glass tube by sealing their middle portions, and these lead wires are Since the filament is connected to the tip, there is no need for a flared part like in the past, which reduces material costs and makes manufacturing easier, making it effective for lamps with small bulb diameters.

Further, according to the bulb of the present invention, since the end of the tube bulb is welded to the side surface of the exhaust pipe of the mount, the height of the electrode can be lowered, and a small lamp can be easily manufactured. be able to. When applied to a fluorescent lamp, the effective light emitting length relative to the entire length of the bulb can be increased.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, in which (a) is a sectional view of a mount, and (b) is a side view thereof.

FIG. 2 is a sectional view showing the end of a lamp using the above mount.

FIG. 3 shows a conventional example, (a) is a cross-sectional view of the mount;
(b) The figure is a side view.

[Explanation of symbols]

1...Mount, 2...Exhaust pipe, 3...Lead wire, 4...Filament, 20...Valve.

Claims (2)

[Claims] [Claim 1] A pair of lead wires are attached to the side surface of an exhaust pipe made of a glass tube by sealing their middle portions, and a filament is connected between the tips of these lead wires. Mount for tubes. [Claim 2] Mounting is carried out by attaching a pair of lead wires to the side surface of an exhaust pipe made of a glass tube by sealing their intermediate parts, and connecting a filament between the tips of these lead wires. A tube comprising: an end portion of a tube valve joined to a side surface of the exhaust pipe.